672403663 has 4 divisors (see below), whose sum is σ = 672462648. Its totient is φ = 672344680.

The previous prime is 672403639. The next prime is 672403679. The reversal of 672403663 is 366304276.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 672403663 - 2²⁵ = 638849231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672403463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6328 + ... + 37213.

It is an arithmetic number, because the mean of its divisors is an integer number (168115662).

Almost surely, 2^672403663 is an apocalyptic number.

672403663 is a deficient number, since it is larger than the sum of its proper divisors (58985).

672403663 is a wasteful number, since it uses less digits than its factorization.

672403663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58984.

The product of its (nonzero) digits is 108864, while the sum is 37.

The square root of 672403663 is about 25930.7474439130. The cubic root of 672403663 is about 876.0791748007.

The spelling of 672403663 in words is "six hundred seventy-two million, four hundred three thousand, six hundred sixty-three".